atlantics built this 19 metre high and 51 metre long stainless steel spiral tunnel slide at the treetop walk in the Natural Heritage Centre in Prora on the island of Rügen in Mecklenburg-Western Pomerania. The treetop walk offers Baltic Sea holidaymakers an additional highlight that provides an alternative to a day by the water, especially on days when there is no real swimming weather. At the Natural Heritage Centre, visitors can hike through the beautiful forest, climb the treetop walk and, as a highlight, whizz down the large adventure tunnel slide.